041207 custom, JDK 1.6.0. I have installed JDK
1.2.2_017 and added it as a Java Platform,
including src.jar. If I make a new j2seproject
using this platform, I can compile and run classes
like this fine:

package usesjdk12;
public class Main {
    public static void main(String[] args) throws
Exception {
        java.lang.reflect.Method m =
Main.class.getMethods()[0];
        System.out.println("name=" + m.getName());
    }
}

However code completion does not completely work.
In particular, it will not complete the
java.lang.reflect.* package or any classes in it.
(java.lang.ref *does* work.) However when the
variable 'm' above is declared as a Method, then
code completion on e.g. m.getName() does work - it
is just the class name which cannot be completed.

Also there is no code completion on "System", for
example. Yet there is completion on "System.".

Now I shut down the IDE, delete my var/cache/ dir,
and restart. Code completion seems to be working
fine for a while. But then I switch to another
project using JDK 1.2 and try to use code
completion; it does not work, and I get exceptions
(attached).